Record card controlled code converter



July 22, 1952 R. H. HALVORSEN 2,604,533

RECORD CARD CONTROLLED CODE CONVERTER Filed Feb. 5, 1950 8 Sheets-Sheet 1 INVENTOR RALPH H. HALVORSEN July 22, 1952 R. H. HALVORSEN 2,604,533

RECORD CARD CONTROLLED CODE CQNVERTER Filed Feb. 5, 1950 8 Sheets-Sheet 4 FIG. 4

INVENTOR RALPH H. HALVORSEN WATTORNEY l y 1952 R. H. HALVORSEN 2,604,538

RECORD CARD CONTROLLED CODE CONVERTER Filed Feb. 5, 1950 8 Sheets-Sheet 5 FIG. 5

53 FIG. 2 :l 5 I03;

FIG. I FIG. 3

FIG. 5 FIG. 4 INVENTOR RALPH HI-HALVORSEN B ZIV fi v lnm TTORNEY y 22, 1952 R. H. HALVORSEN 2,604,538

RECORD CARD CONTROLLED CODE CONVERTER Filed Feb. 5, 1950 8 Sheets-Sheet 6 FIG. 7

INVENTOR N RALPH H. HALVOR SEN gm 3 B Z AX AYTORE' EI W July 22, 1952 R H. HALVORSEN 2,604,533

RECORD CARD CONTROLLED CODE CONVERTER Filed Feb. 5, 1950 8 Sheets-Sheet 7 FIG. ll

00 I40-y L CARD I60? EJECT CARD SENSING |ro DEVICE .44

Iao- CARD Mn SUPPLY -w FL FIG. 9

FIG. IO

INVENTOR RALPH H. HALVORSEN ATTORNEY July 22, 1952 R. H. HALVORSEN RECORD CARD CONTROLLED CODE CONVERTER 8 Sheets-Sheet 8 Filed Feb. 5, 1950 INVENTOR RALPH H. HALVORSEN ATTORNEY Patented July 22, 1952 RECORD CARD CONTROLLED oops CONVERTER Ralph H. Halvorsen, Chicago, Ill., assignor to Teletype Corporation, Chicago,

tion of Delaware 111., a corpora- Application February 3, 1950, Serial No. 142,262

- 1 This invention pertains to a code conversion arrangement for converting information in per forated form from one code to a different code. The principal object of the invention is to provide code translating instrumentalities for translating data stored in statistical or tabulating cards in one code into information stored in a control record in a different code.

Another object of the invention is to provide means for sequentially sensing the upper and lower fields of a statistical or tabulating card and then transmitting the information sensed to a reperforator to produce a perforated tape record.

Another object of the invention is to translate codes normally used in the production of business machine cards to codes such as the Baudot code for use in telegraph transmission.

Specifically, the invention contemplates a code conversion arrangement comprising a card sensing device associated with the punched card type of tabulating machinery which is adapted to translate a pre-punched card and through electrical circuits cause a tape to be perforated.

An important feature resides in the manner of directing the card through the card sensing device to facilitate sensing first one field (for example, the upper field) and then the other field (thatis, the lower field). The conversion from card code to telegraph (Baudot) code is achieved through a fan circuit which includes a group of card code relays for the purpose of preparing operating paths to a group of Baudot code relays which, in turn, sets up the transmitting code to a distributor or to a five magnet tape punch. Another feature of the invention resides in providing a case shift means for automatically inserting letters and figures (unshift and shift, respectively) codes in the tape, depending on the character code sensed in the tabulating card.

The above and other objects and features of the present invention will be fully set forth in the following description and appended claims,

and will be more readily understood by reference to the accompanying drawings, wherein Figs. 1 to 5, inclusive, are component parts of an electrical circuit arrangement associated with the card sensing device according to the present invention;

' Fig. 6 isa view showing the relative arrangement of Figs. 1 to 5, inclusive;

' Fig. 7 is a perspective view of the card sensing device according to the presentinvention;

Fig. 8 is a perspective view showing a com- 'mutator associated with the card rack for automatically inserting telegraph signals;

8 Claims. (Cl. 178-26) 2 Fig. 9 is a schematic plan view of the arrangement according to the present invention;

Fig. 10 is a plan view of the form of cardfor use in connection with the present invention;

Fig. 11 is a cam diagram of the camsin the distributor unit;

Fig. 12 is a perspective view of an alternate form of card sensing unit;

Fig. 13 is a cross sectional view of a card sensing element; and Fig. 14 is amodified portion of the electrical circuit according to the invention. 1

Having reference to the drawings wherein like reference characters represent like parts throughout the several views, the cardjsensing device shown in Fig. l is arranged to read or sense statistical cards such as shown inFigJlO. The record 01' statistical card II comprises 45 columns and is divided into an upper field I2 and a lower field I3, thus providing columns of information, 45 columns in each field. Cards I I are fed into a card sensing device, illustrated in Fig. 7 and indicated generally by the numeric l4, which includes sensing mechanisms I5 and it for sequentially sensing said upper and lower fields I2 and I3, respectively. As indicated in Fig. 9, a stack of cards is placed in a card supply receptacle I1 and card feeding facilities, exemplified by revolving feed rolls 20, are provided such as disclosed in Fig. 2 of U. S. Patent No. 2,044,707. Upon being fed into the card sensing'device I4, the card II is held against a stop [8, analogous to stop 34 shown in Fig. 2 of said patent. The card II is then fed step-bystep, or column by column, by feeding mechanism hereinafter described, toward the left as viewed in Fig. 9, whereupon the card II is eventually ejected into a receiving magazine (or card eject) IS in the manner also shown inFig. 2 of Patent No. 2,044,707 and therein described.

I The card I I is thus inserted between the upper plate M and lower plate 22--22 of the card sensing device It and is hearing against the stop I8. In the portion of the card sensing device It embraced by the card II in this initial position, is the card sensing means I5 for sensing or reading the perforated code record in the upper field I2 of the card II. The card sensing means I5 comprises in the present embodiment a series of six sensing fingers 23 guided for vertical reciprocation by suitable guiding means (not shown). Adjacent the upper end of each'sensing finger I0 is a'leftwardly directed notch 24 (as viewed in Fig. '7). The several notches 24 are arranged in alignment to receive the bail portion 25 of a vof lever 62 coacts with a contact 64. card in the card sensing device I4. adjacent senssensing bail 26 mounted pivotally on an appropriately located pivot shaft 21. The opposite arm of bail 26 terminates in a cam follower portion 28. A spring 29 normally biases bail 26 counterclockwise causing follower portion 21 to engage the periphery of a sensing control cam 3| carried integrally on a cam sleeve 32 which is driven by a power shaft 33 through a friction clutch 34 of well known construction. Also integral with the sleeve 32 is a stop disc 35 which cooperates with the armature 36 of an upper field sensing magnet 31.

Contiguous to the friction clutch 34, in the present embodiment, andalso carried on the drive shaft 33 is a cam sleeve38 provided integrally thereon with a stop disc 39 and a lower field sensing control cam 4I. Cooperating with stop disc 39 is an armature 42 of a lower field sensing mag-net 43. Armatures 36 and 42 are mounted pivotally on an appropriately journaled V pivot shaft 44.

"Similar to card sensing means I5, the card sensing means'I6 comprises a series of six sensing fingers45 appropriately guided to sense the code perforations in the lower fieldof the card II. The fingers 45 are provided adjacent their upper extremities with a series of aligned notches 46 adapted to receive the bail portion 4! of a sensing bail 48 mounted pivotally on a shaft 49. A spring I normally biases the bail 48 clockwise to bring the follower portion 52 thereof into engagement with the periphery of the sensing cam 4I.

The upper extremities of sensing fingers 23 control the opening and closing of individual contacts 53. Similarly, the upper ends of fingers 45 cooperate with individual contacts 54. the slots 55and 56 in upper plate 2I for sensing Besides pins 23 and 45 respectively, apertures 51 and 58 are also provided therein for upper and lower field contact devices 59 and 6|, respectively.

.Contact device 59 comprises a lever 62 mounted pivotally on a shaft 63. One arm of' lever 62 is provided with means operable through aperture 5I to coact with the card I I, while the other arm With a ingfingers 23, the card contact 64, for the upper field will open, theeffect of which will appear hereinafter.

The contact 64 will remain open until the card II has progressed stepwise the 45 columns of the upper field. The upper and lower ;field card contacts 64 and .65, respectively, are .50 located that as the card II moves from the forty-fifth to the forty-sixth column, the lower field contacts 65 will open and the upper fi-eld card contacts 64 will close, the effect of which .will also appear hereinafter. The system according-to the present invention will function thus until all 90 card columns are sensed.

The mechanism for moving the card II stepwise for column by column sensing comprises a stepping rack member 66 disposed immediately 'below the card sensing device, and operable between bottom plates 22 and 22. Rack 66 is pro- .vided with a pair of projections 61 between which the card II is guided to the stop I8 (Fig. 8).

Projections 61 also function to retain the card It to effect stepwise or columnwise movement of said card during the sensing operation. The bottom side of rack member 66 is provided with rack and groove connection II to a driven clutch portio n"l2 of a toothed clutch comprising also a driving portion I3 fixed to a shaft 14. A compression spring I5 functions to hold clutch portions I2 and I3 into engagement. A gear I6 is also fixed to the shaft I4 and is meshed with a pinion gear I? fixed to a drive shaft I8 in a manner as to impart counterclockwise rotation to the gear I6, and hence to the shaft-I4. A. power shaft I9 normally tends to drive the shaft I8 through a friction clutch 8 I.

Fixed to the shaft I8 is a stepping ratchet 82 which cooperates with an escapement member 83 mounted pivotally on a pivot shaft 84. Escapement member 83 is controlled by a stepping magnet 85 which is periodically energized in a manner to be hereinafter described. Integral with clutch portion 12 are a pair of flanges 86 and 61 spaced to provide a groove for a forked member 88 mounted pivotally on a pivot shaft 89 and adapted to be controlled by a carriage return magnet 261. When the magnet III is energized, as will hereinafter appear, the clutch portion 12 will become disengaged from the clutch portion I3, thereby permitting the carriage return spring (not shown, but of the form disclosed in U. S. Patent 1,904,164) to function through its strap 92 to draw the rack bar 66 rightwardly, as viewed in liig. '7 until its returns to the position wliereat a new card can be fed into the sensing device I4. The rack bar 66 in its rightward or returnedposition cooperates with a contact arm'93 to operate a pair of card feed contacts 94 vand 95,.as will presently appear. In its leftward position the rack bar 66 cooperates with a contact arm 96.to operate a pair of card eject contacts 259 and 212 as will also appear presently.

As shown in Fig. 8, the rack bar 66 is provided with an arm 98 extending rearwardly and up wardly which carries a plurality of commutator brushes 96 adapted to cooperate with a corresponding number of commutator segments IOI embedded in a commutator rack I62 of suitable The commutator I02 extends the entire length of the stepping rack 66 to embrace the entire columns. Each segment ISI represents a function such as, line feed, trip, carriage return and skip for which it is desired to perforate a telegraph signal code combination in a tape. The commutator brush 96 containing seven contact brushesBD so mounted as to coincide with the commutator segments IOI in the commutator rack I (l2'is attached to and moves with the stepping'rack .66. The segments IIII in K the commutator rack I02 are drilled-at each step or column so that a copper peg may be inserted at any location on the commutator rack. It will be assumed that a peg is inserted in column 45 of the trip commutatorsegment (one of the segments IIII). Then, as the commutator brush 96 reaches the peg in the trip commutator bar, a circuit will be closed to operate the trip relay, as will hereinafter appear in the description of the electrical circuit.

As previously mentioned, the code conversion from card code to Baudot (or other) code is achieved through a fan circuit to a group of Baudot code relays, which set up the Baudot code to be transmitted. In the upper field, the

sensing fingers 23 close one or more contacts 53 (Figs. 1, 5 and 7) according to the particular character sensed, whereupon circuits will be established from grounded battery I63 (Figs. 5 and 7), through one or more closed contacts 53 (which are connected in parallel), over their respective conductors I04 to I69, and through their respective relays III to II -6 to ground. Similarly,

in the lower field, the sensing fingers 45 close one or more contacts 54 according to the particular character sensed, whereupon circuits will be established from grounded battery II1 (Fig. 7), through one or more closed contacts 54 (which are also connected in parallel) over their respective conductors H8 to I23 and then through their respective relays III to H6 to ground.

Relays I I I to I I6 when energized in accordance with the setting of the fingers 23 or 45 (depending on whether the upper or lower field is being sensed or read) will establish a path through the fan circuit (Fig. 1) extending from grounded battery I24 (Fig. 4) through cam controlled contact I25 (controlled by the cam exemplified by cam contour I69, Fig. 11) in the distributor I26, over conductor I21 (Figs. 1 and 4), thence through the the respective Baudot code relays I3 I, theneither over conductor I32 and through Letters relay I33 (Fig. 2) to ground, or over conductor I34 and through Figures relay I35 to ground. Relays I33 and I35 became locked up over conductor I36 (Figs. 2, 3 and 4) and through contact I31 (controlled by cam I46, Fig. 11) in distributor I26 (Fig. 4) to grounded battery I38. As will appear hereinafter, the Baudot code signal set upon the contacts associated with the operated relay I3I will be transmitted through the transmitting contacts I39 embodied in the distributor I26 (Fig. 4). The Baudot code signal thus generated may be employed to operate a tape perforator replacing the transmitter I39.

The letters" relay I33 and figures relay I35, together with letters conditioning relay MI and figures conditioning relay I42 are utilized for the purpose of automatically inserting letters and figures case code signals in the tape upon each change of case depending on the code sensed in the tabulating card. Assuming that a stack of cards is placed in the card magazine I1, the start switch I42 is operated to close contacts I43 and I44 thereof. When no cards are as yet in the card sensing device I4, the contacts 64 and 65 are closed and accordingly, the upper field relay I45 and the lower field relay I46 are in an energized condition. Relay I45 is operated over a circuit extending from battery I41, over conductor I48, through winding of relay I45, through contact 64 to ground. Relay I46 is operated from battery I41, over conductors I49 and I5I, through the winding of relay I46, through contact 65 to battery.

With the operation of the start switch I42, the contacts I43 and I44 will be closed, and an energizing circuit for start relay I53 will be established from ground, through contact I44 (now closed), through the winding of start relay I53, through contact I54 (now closed) of upper field relay I45, through contact I55 (now closed) of relay I46, over conductor I56 and through contact I43 to grounded battery I51. Relay I53 upon operating will close its contacts I58 and I59, and will open its contact I6I. Contact I53 upon clos- Ing completes a circuit for the energization of the card feed magnet I62 (Fig. 2) extending from ground, through contact I58 (now closed), over conductor I63, through contact 95 (which is closed only when the stepping rack member is in its rightward or starting position), over conductor I64, through the winding of the card feed magnet I62 and over bus conductor I65 to grounded battery I66. The operation of the card feed magnet I62 will advance a card into the card sensing device H in the manner disclosed in aforementioned Patent 2,044,707. With a card II in the card sensing device I4, the card controlled contact 64 for the upper field I2 will open, there by de-energizing the upper field relay I45.

Contact I59 (of start relay I53) upon closin will complete a circuit for energizing a "Figures conditioning relay I42 extending from ground, through contact I59, over conductor I61, through the winding of relay I42, to grounded battery I68. Relay I42 will become locked up over a circuit extending from grounded battery I68, through the winding of relay I42, through contact I69 (now closed), over conductor HI and through contact I12 (now closed) of Letters relay I33 to ground.

Upon the deenergization of the upper field relay I45 due to the opening of contact 64 by a card II, its contact I54 will open, thus breaking the circuit for the start relay I53. Also, the opening of contact I58 of start relay I53 will break the previously described circuit for the card feeding magnet I62. The release of the upper field relay I45 and the start relay I53 will cause the upper field sensing magnet 31 (Figs. 2 and 1) to become energized over a circuit extending from grounded battery I66, over conductor I65, through the winding of upper field sensing magnet 31, over conductor I13, through contact I14 (now closed) of upper field relay I45v through contact I15 (still closed) of lower field relay I46, over conductor I16, through contact I6I (now closed) of start relay I53, over conductor I11, through contact I18 (now closed) of relay I42, then over conductor I19 (Figs. 2, 3, and 4), through contact I6I (now closed) of relay I82, over conductor I83, through cam controlled contact I84 (controlled by cam I16, Fig. 11) in the distributor I26, and through tape controlled contact I85 to ground. Thus, the upper field sensing magnet 31 (Fig. 1) becomes energized, thereby pulling up its armature 36 to release the sleeve 32 for rotation. Cam 3I thus acts to oscillate the bail member 26 to reciprocate the tape sensing pins or fingers 23. The energizing circuit for the upper field sensing magnet 31 is extended through the taut tape contact I85 on a reperforator (not shown) so that the sensing operation will not start if tape is not available in the reperiorator. Of course, a reperforator may or may not be associated with the distributor I26.

The ball 25 in its downward movement allows the sensing fingers 23 to read the code perforated in the card II. The fingers 23, depending on the code punched in the card being sensed, will cause the card code contacts 53 to close, and the closure of these contacts 53 will cause the card code relays III to H6 to energize in accordance with the code sensed in the card II. Assuming that the code for the character A (in card code) is sensed in the card, sensing fingers 23 in the I, 5 and 9 positions (Fig. 10) will protrude far enough downward to allow the code sensing contacts 53 to close, since perforations are punched in the card at these locations. With the I, 5 and 9 sensing contacts 53 closed the I, 5 and 9 card code relays H2, H4 and H6, respectively will operate.

With the operation of the card-code relays H2, H4 and H5 (I, 5 and 9 positions) a circuit will be closed from battery I24 (Fig. 4), through contact I25 (now closed), over conductor I21 (Figs. 4 and 1), through contact I86 of the unoperated zero card-code relay III, then through contact I81 (now closed) or the oper- 7 ated No. 1relay I-I2, through contact I88. of the unoperated No. 3 relay I-I3, through .contact I89 (now closed) of the. operated No. 5 relay II 4, through contact .I9I of the operated N0. 7 relay H5, and through contact. I92 (now closed) of the operated No. 9 relay II6. 'This relay H6 is shown in Fig. 5 but embraces also the vertical row ofcontactsshown in both Figs. 5 and 1 ofwhich contact I92 is. apart. The-.circuit then extends over conductor I93 (which passes through cables I28, .I29 and I30 (Figs- 1 and 3), through the winding of the .A code relay I94':(Fig."3) of the group .ofrelays I3I,'then over conductor :I32,1and through the winding of Letters code relay I33 (Fig. '2) .to ground. Although a code relay I3I (such. as-relay I94) is connected in series with the relays I33 (or I35), the characteristics of the relay winding are such that only the relay I33 or I35 will energize, be-

cause it will require a stronger current to energize a code relay I3I. This is achieved in a manner which will presently appear.

' Relay I33, in operating, closes its contacts I95, I96, I91 and code contacts I98, and opens its contacts I12 and I99. I12 breaks thelocking circuit for relay I42. Contact I91 in closing completes an energizing circuit for the distributor clutch magnet 20I (Fig. 4) extending from ground, through cam. operated contact 202 (now closed), through the winding of magnet 20 I, over conductor 203 (Figs. 2, 3, and 4), through contact I91 (now closed); over conductor 204, to battery 205 (Fig. 4). Contact'202 is controlled by a cam exemplified by cam contour I50, Fig. 11. Magnet 20I, upon operating, releases a clutch (not shown) in well known manner to. initiate the rotation of. a cam shaft (not shown) in the distributor I26, the cams on which are exemplified by the cam diagram shown in Fig. 11. Promptly upon initiation of rotation of the cam shaft, the contact iI31 closes to complete a locking circuit for relay I 33 from grounded battery I38 (Fig. 4), through contact I31 "(now closed), over conductor I36 (Figs. 2, 3, and 4), through contact I95 (still closed) and through the winding of relay I33 to ground. As observed from Fig. 11, the contact I31, controlled by the locking cam I40, remains closed (and the relay I33 remains'energized) until the fifth impulse of the code has been transmitted. That is, contact .I31 willstay closed to furnish a locking'path for relay I 33 throughout the transmission period, assuring the. transmission of all five impulses. Transmission is effected over a circuit. comprising one side 206 of the signal line (Fig. 4), over bus conductor 201 (Figs. 2, 3, and- 4), through contacts I98 (now closed) of relay I33, over .the

bus conductors 208, through the contacts I39 as they are closed sequentially by the transmitting cams, then over side 209 of the line. The opening of contact I12 of relay I33 breaks the locking circuit for relay {-42, which releases.

The'closing of contact I96 of relay I33 eifects the. energization of conditioning relay MI at an instant determined "by the closure of a timing contact 2li.controlled by the shift relay cam, exemplified by contour line I80 in Fig. 11. This circuit is established from grounded battery 2l3 (Fig. 2), through the winding of relay I4I,- over .conductor 2I4, through contact I96 (still closed) .ofrelay I33, over conductor 2 I 5 (Figs. 2, 3 and 4) and through contact :2.II (when closed), .to ground. .Relay I4I, :whenv energized. closes .its contacts 2I6, 2I1 and 2l8. Upon the closing of contact '2'I6, alockingcircuit for'relay MI is pro- The opening of contact vided from battery 2I3, through thewinding of relay I'4I, then throughthe contact 2l6 (now closed), andthrough the contact 2 I9 (now closed) of figures relay I 3 5, to. ground.

Upon the closing of contact 218 (of relay 'I4I) ashunt isprovided around relay I33 to permit the aforementioned A code relay I94 to energize. Relay I94 upon operating closes its looking contact'22I, distributor clutch control contact .222, and code control contacts 223. The locking circuit for relay I54 is completed from ground (Fig. 2) through contact2I8 (now. closed) of relay I4I, over conductor I32, through the winding of relay I94, through locking contact 22I' (now closed), over conductor I36 (Figs; 3 and 4) and through .cam controlled contact I31 to battery 138. Upontheclosing of the distributor clutch contact 222 a circuit is again completed for the distributor clutch magnet I (at. the conclusion of the previous cycle just described for transmitting the letters or unshift code signal) from ground, through contact 202 (now closed), through the winding of magnet 20I, over conductor 203'(Figs. 4 and 3), through contact222 (now closed) of relay I94, and over conductor 204 to battery 205. During the ensuingrotation of the distributor cam shaft and the sequential closing of contacts I39 the signal impulses identified with the alphabetical character A will be transmitted over the line 2062fl9 in the same manner as previously described for the letters or unshift code.

- It is observed that the.letters or unshift code signal preceded the alphabetical character automatically. Should the next character sensed on the card'also be an alphabetical character. it will not be preceded by 9. letters or unshift code signal. However, if the case should change, that is if the next character sensed is a figures or upper case character, then according to the present invention said character will be preceded automatically by a figures shift code signal, the actual transmission of the character sensed being deferred until the figures or case code signal has been transmitted. Thus, a feature oi'the invention resides in automatically'inserting a case signal upon each changeof case.

It will be assumed now that the card code for a numeral, or upper case of "figures" shift character, is next sensed in the card, for example, the numeral 1. Over a circuit to be described the Baudotcode relay 224 (Fig. 3) will become energized. In response to the sensing of the code holes in the card, the card code relay I I2. will become energized by current derived from batteryl03. During the rotation of the distributor cam shaftthe contact I willclose to complete a circuit for relay 224', through the fan circuit shown in Fig. 1', from battery I24 (Fig.4), through contact I25, over conductor I21, through contact l86 (still closed) of relay III, through contact I81 (now closed) of relay H2, through contact I88 of relay H3, through contact 225 of relay I14, contact 226 of relay H5 and contact 221 of relay II6, then over conductor 228 (through cables-I28, I29 and I) through the winding ofrelay 224 (Fig. 3), over conductor I34, and through the winding of relay IL(Fig. 2) to ground. Aspreviously described, this circuit will allow relay'I35 to operate, but'the windingofthe transmitting relay 224 (which is one of the transmitting relays I3 I )isso designed that it will not operate when in series with the figures relay-J35.

:As previouslyv described inconnection with the 9. transmission of an alphabetical character, a "flgures orshift signal will be transmitted before the upper case character signal will be transmitted. That is, the shift signal will be inserted or introduced automatically. Accordingly, the relay I35 will close its contacts 229, 23I, 232 and code contacts 233, and open its contacts 2I9 and 234. The contact 229 upon closing completes an energizing circuit for the distributor clutch magnet 20I (Fig. 4) over the circuit previously described for contact I91, with which contact 229 is connected in parallel. As previously mentioned, the magnet 20I controls a cam shaft for operating the contacts I25, I31, I84, 202, 2H, and 235. As before, the closing of contact I31 completes a locking circuit for relay I35 (the same as it did for relay I33) and transmission of the "figures shift code over the signal line 206-409 will be effected.

The closing of cam controlled contact 2II (Fig. 4), controlled by cam I80, Fig. 11, completes an operating circuit for the conditioning relay I42 (Fig. 2) from grounded battery I68, through the winding of relay I42, over conductor I61 to junction 236, over conductor 231, through contact 232 (now closed), then over conductor 2 I5 (Figs. 2, 3 and 4) and through the closed contact 2 to ground. Relay I42, as before, becomes locked up through its own contact I69 and contact I12 (now closed) of relay I33. Besides closing its contacts I69 and I18, relay I42 also closes its contact 238 to provide a shunt around the relay I35, thereby permitting the relay 224 to operate and close its contacts 239, 24Iand 242. Upon the closing of locking contact 242, a locking and operating circuit for relaly 224 is completed from grounded battery, through cam controlled contact I31 (Fig. 4), over conductor I36, through contact 242 (now closed) of relay 224 (Fig. 3), through the winding of relay 224, over conductor I34 to 'junction 243 (Fig. 2), over conductor 244 and through contact 238 (now closed) of relay I42, to ground. Upon the closing of the distributor clutch contact 239 a circuit is again completed for the distributor clutch magnet 20I (upon the completion of the previous cycle just described for transmitting the figures 0r unshift code signal) from ground, through contact 202 (Fig. 4) as previously described. During this rotation of the distributor the code signal impulses for the numeral I will be transmitted.

The card stepping mechanism shown in Fig. 7 has been previously described. The means for controlling the stepping operation will not be set forth. The cam controlled contact 235 in the distributor I26 (Fig. 4) is associated with the card stepping function (exemplified by cam contour I90, Fig. 11), and when it is closed (as indicated in the cam diagram in Fig.'ll.) a circuit for the pulsing or momentary energization of the stepping magnet 85 (Figs. 2 and '7) is completed from ground, through contact 235 (now closed momentarily by its cam I90), through normally closed contact 245 of relay I82 (Fig. 4), over conductor 234, through contacts I99 and 231 (now closed) of relays I33 and I35, respectively (Fig. 2) over conductor 241, and through the winding of relay 248 (Fig. 4) to grounded battery. Relay 248 upon energizing closes it contacts 249 and 25 I. The closing of contact 249 provides a locking circuit for relay 248 for a purpose to be hereinafter described. However, under the present condition of operation, the relay 248 is operated only momentarily; that is, for the duration of closure of contact 236 (Fig. 4) by the cardstepping cam,

and upon the closing of contact 25I, a circuit is established for the stepping magnet 65 (Fig. 2) from battery I66, over conductor I65, through the winding of magnet 85, over the conductor 252 (Figs. 2, 3 and 4) and through the contact 25I to ground.

The cams on the cam shaft in the distributor I26 are so arranged that the contact 202 will open to release the clutch magnet MI, and the contact I25 will open so that the operated transmitting relay I3I will be under control of its locking path. Thus, an overlap is provided between the sensing and transmitting functions to allow sensing of the next column to take place while the previous column information is being transmitted.

Card stepping will take place cyclically column by column except. when there is a change between upper and lower case (shift and unshift) oryice versa, in which event, as previously noted, either the unshift (letters) relay I33 or the shift (figures) relay I35 will be energized to open its respective contact I99 or 234,thereby breaking the operating circuit for the feed control relay 248. In this manner, the card stepping operation is suppressed to enable first the transmission of 5a case signal (letters) and then the transmission of the character sensed in the card. Thus, upon a change of case the code perforated in the card is sensed or read twice, the first reading determines the case. If the case remains the same, the stepping or feeding function proceeds uninterruptedly, and if the case changes, then the feeding operation is suppressed for one cycle to permit the transmission of the proper case signal.

The above-described procedure of sensingor reading the upper field of the card II will continue until the card has progressed the columns of the upper field, it being recalled that the length of the card II (Fig. 10) is divided into, for example, 45 columns, so that the upper field I2 and lower field I3 total columns. Of course, any number of columns can be adopted. The upper field contact 64 and lower field contact 65 (Fig. '1) are so located that as the card I I moves from the forty-fifth to the forty-sixth columns (that is, from the right-hand column of the upper field to the left-hand column of the lower field) the lower field card contacts 65 (Fig. 2) will open and the upper field card contacts will close. This" will cause the lower field relay I46 to deenergize, and the upper field relay I45 to operate. Relay I45 upon energizing will open its contact I14 to break the circuit for the upper field sensing magnet 31 (Figs. 2 and 7). Thus, in the circuit of start relay I53, the contact I54 of relay I45 is closed, and contact I55 of relay I46 is now open.

Relay I46 upon releasing will open its contacts I55, I15 and 253, and close its contacts 254 and 255. The closing of contact 255 prepares a circuit (to be presently traced) for the lower field sensing magnet 43 (Figs. 2 and 7). The closing of contact 254 prepares a circuit (hereinafter traced) for the eject magnet 256. The energization of relay I45 and deenergization of relay I46, as just described, functions to transfer the sensing operation from magnet 31 to magnet 43. Hence, upon the closing of contact 255 a circuit for magnet 43 will be completed from battery I66, over conductor I65, through the winding of magnet 43, over conductor 251, through contact 255 (nowclosed) of relay I 46, over conductor'l16, through contact I6I (still closed) of relay I53, over conductor I11, through either contact 2I1 or I 18 (one or the other of which is closed, depending upon whether the code sensed in the card isflin the upper or the winding of magnet 261 to battery 265. carriage return magnet 261 closes its locking ...11 lowercase) over. conductor I19 (Figs. 2,3, and 4), through contact iIBI oflrelay I82, over conductor ii83, through contacts I84 and 185 to ground.

The-contacts .53 and54 aresconnected in parallel and :in turn control the card code relays III to I I6, as previously mentioned. Thus, when the sensing operation .proceeds in the lower field as it did in the .upper field, thesensing of holes in the card II :by the sensing fingers 45 acts to close the contacts 54 correspondingly.

It is now observed 'thatthe closed contact 202 normally'prepares the .circuit'for the clutch magnet '26 I, which circuit becomes established upon the closure of :any ofithecont'acts (indicated gen erally as 258 -of relays 13 I and' analogous relays. Thus; when the card'code issensed in the lower fieldlasin'the upper fie'ld) the contacts 54 are cl'osed permutably to complete circuits for the *ener'gization'of corresponding ones of the card c'od'e relays II I to I I6. through the 'fan' circuit (Fig. I) "so that current 'from battery I24, through contact I25 (Fig. 4)

A path is then completed {is extended over conductor I21, and through'the Ian circuit path to theselected transmitting relay I 3 I As previously described, this circuit extends over conductors I32 or I34 through the windings of relays I33 and I35, unless these relays are s'hunted by theclosure of contacts 218 or 238, in which event relays I33 and I35 will not operate. It-is recalled that relays [33 and I35 operate only upon a change-of case (or shift condition). The system according to the invention will thus function as described until all the card columns (90 in the present embodiment) are sensed. While the information or code in column 80 is being transmitted and the card stepping cam is closing its contact 235, the card II will advance one step, and the stepping rack 66 "willthrough contactor 96, close the eject contact 259 to complete a circuit for energizing the eject relay 26I (Fig.2) from ground, through contact 258 (now closed), over conductor 262, through the winding 'ofrelay '26I and over conduc'tor I 49 to battery 141. Relay 26I upon-endrawal of the stop I8, the ejectionof the card bein'g effected substantially as disclosed in the aforementioned Patent No. 2,044,101. As the card I I 'is thus ejected from the card sensing device I4, the contact 65 will again close and the circuit for relay I46 (Fig. 2) will be completed, thereby efiecting the energization of said relay I46an'd the closing of contracts I55, I and 253.

Relay I53 will also energize.

Contact 253 of relay I46 (Fig.2) upon closing completes a circuit for a carriage return magnet 261 (Figs. 2 and 7) from ground, through contact-253 (Fig. 2), over conductor 268, through contact'263 (now closed) of relay 261, through The contact '21I to complete a locking circuit from battery 269, through the winding of magnet 261, through'contact' 21I (now closed), through contact 84 (still closed), over conductor I63, and through contact I58 (still closed) or start relay I53,to ground. The carriage return magnet 712 1261, upon energization will attract its armature 88 to effect the disengagement'of clutch portion Whom the clutch portion .13,'.thereby permitting the carriage return device (exemplified by strap 82) to actuate thera'ck 66 rightwardly (as viewed in Fig. 1) to its carriage return position whereat the contact 94' is opened, and the contact 95 is again closed. The opening of contact '94 breaks the locking circuit for the carriage :return'relay 261. As the rack 66 is returning to its normal position,'the contact arm 86 is disengagedpand the contact 259 is opened-and the contact 212 is again closed. The closing of contact '95 by the rack 66 upon the completion of-the carriage returnxfunction will again complete an energizing circuit ifor the card feeding magnet I62 toefiect the -advancement of a'new card into the card sensing device I4. With thenew cardin the card advancing device I4, the card'controlled contact 64 for the upper field will again open, thus deenergizing the upper field relay I 45. The 'sequence 'of reading or sensing a new card is initiated,and the operation is repeated.

.A previously mentioned, provision is made in the present'embodimentof the invention for the automatic insertion of telegraph signals, for such functions as trip, intermediate trip, skip, carriage return and line feed. It is recalled that a commutator arrangement, Fig. 8, is provided wherein a brush arm 98, carrying a plurality of brushes 90 traverses a corresponding plurality of commutator segments 'I6I. Moreover, the segments IOI in the commutator rack are drilled at each step or column so that a copper peg (or of any conductive material) -may be inserted at any location of the commutator. Assuming that "a copper peg is inserted in column -45 of the trip commutator segment -IOI, and as the commutator brush arm 98 reaches and engages the peg in the commutator baror'segm'ent IN, a circuit will be closed from ground, through the winding of relay I82 (Fig. 4), over conductor 213, over commutator brush arm 98, through contact 214 (exemplified by copper peg), through the winding of trip relay 215, to positive battery216.

With the translating or code converting arrangement of the present invention functioning as hereinbefore described, a circuit for the Fig. Z card code relay 211 (which is the code're'presenting the trip function in the card punch unit) is established from ground, through tape controlled contact I and cam controlled contact I86 (now closed) of distributor I26 (Fig.4), over conductor I83, through contact 218 (now closed) of relay 182, over conductor 219, through contact 28I (now closed) of "trip relay 215, over conductor 282, through the winding of relay 21.1, over conductor I34 (Figs. 2, 3 and 4) to junction 243, then through thewinding of relay I35 to ground.

Upon the energization of relay I35, the Figures code or shift signal will be automatically transmitted, as described h'ereinbefore in connection with the feature covering the automatic insertion of a shift (or unshift) code signal, after which the upper case character Z (in the present instance) will be transmitted, the transmitting circuit being completed through the contacts'283 (now closed) of relay 211, and of course, the transmitting contacts I39.

During .its operation, the trip relay 215 became locked up over a circuit extending from positive battery 216, through the winding of re- :lay 215, through the locking contact 284 (now closed) of relay 215, over conductor 285 (Figs. 2, 3, and 4), through contact 212 (now closed) of the eject contact device exemplified by contact arm 96, to ground. At the close of the transmitting cycle for the character Figs. Z, a circuit will be completed from ground, through the cam controlled contact 235 of distributor I26 (Fig. 4) over conductor 286, through contact 281 (now closed) of relay I82, over conductor 288, through contact 289 (still closed) of relay 211, over conductor 246, through closed contacts I99 and 231 (of relays I33 and I35, respectively), over conductor 241, and through the winding of stepping relay 248 to battery 29I. Relay 248 (Fig. 4) will become locked up over a circuit extending from battery 29I, through contact 249 (now closed), over conductor 292, through contact 293 (now closed) of relay 215, over conductor 294, to ground. Contact 25I (of relay 248) upon closing, completes a circuit for energizing the stepping magnet 85 (Fig. 2), which circuit extends from battery I66 (Fig. 2), over conductor I65, through the winding of magnet 85, over conductor 252 (Figs. 2, 3 and 4) through contact 25I, to ground.

The trip relay 215 (Fig. 4) being looked under the control of the card eject contact 212 (Fig. 2) will remain operated until the card stepping rack 66 reaches the card eject contact arm 96, whereupon the contact 212 will open and the contact 259 will close. relay 215 will become de-energized, thereby releasing the stepping relay 248, and hence the stepping magnet 85. As described hereinbefore, contact 259 upon closing willcomplete a circuit for operating the card eject relay 26I, whereupon circuits are completed for the eject magnet 256 and the carriage return magnet 261. As the card leaves the stepping rack 66, the lower field relay I46 is operated to complete a circuit for the operation of the carriage return magnet 261,.

thereby returning the rack 66 to its starting position.

Other functions such as intermediate trip, skip, carriage return and line feed may be accomplished in substantially the same manner as the trip function just described. According to the present embodiment of the invention a copper peg inserted in the skip commutator bar IOI will effect the transmission of the Fig. G code signals. For carriage return the Fig. A code signals will be transmitted. For intermediate trip either Fig. M, Fig. CR or Lett. CR will be transmitted depending on which commutator bar IOI the copper peg is inserted.

When the horizontal tabulation code OI1 is sensed in the card I I a circuit is established in the usual manner from contact I25 in the distributor I26 (Fig. 4) through the -fan circuit, (Fig. 1) to the-HT relay 295 (Fig. 3), or to the G-I' relay 296 (Fig. 4) depending on the setting of switch 291 (Fig. 3). If the switch 291 is set to permit the energization ofrelay 295 a signal for upper case G is transmitted in the manner described hereinbefore, in which event the stepping function will be limited to one column or step. However, if the switch 291 is rotated to connect with the-conductor 298, a circuit is established for the energization of relay 296, extending over conductor 298 (Figs. 3 and 4), through the winding of relay 296, over conductor I34, through the winding of relay I35, to ground. The operation of relay 296 will start transmission of the upper case G character in the manner already described in connection with upper case characters, for example, the numeral l.

As contact 212 opens, the trip 14 In addition, a circuit will be established from ground, through contact 299 (now closed) of relay 296 (Fig. 4), over conductor 30I, through the winding of relay 302 to positive battery. Relay 302 will look over its commutator IOI, through its commutator brush 90, provided that copper pegs are inserted in the Ship I commutator bar at the particular column being sensed at the time the G-I relay 296 operates. This locking circuit extends from positive battery, through the winding of relay 302, through locking contact 303 (now closed) of relay 302, then through commutator 304, over conductor 213, and through the relay I82 to ground. As the distributor shaft rotates,

' the cam controlled contacts 235 (Fig. 4) will close to complete a circuit for the operation of the stepping relay 248, extending from ground, through contact 235 (now closed for a predetermined period) Fig. 4, then through contact 281 (now closed) of relay I82, over conductor 288, through contact 290 (now closed) of relay 296. over conductor 248 (Figs. 2, 3, and 4), through contacts I 99 and 231 (now closed), over conductor 241, and through the winding of relay 248 (Fig. 4) to battery 29I'. With the stepping relay 248 operated, the stepping clutch magnet 85 will be energized, thereby moving the stepping rack as previously described. The stepping relay 248 was locked up over conductor 292 and through contact 305 of relay 302 to ground.

As mentioned. before, the relay 302 is locked up through the commutator contact 304. Thus, it may be concluded that the relay 302 will remain operated for as many columns as there are pegs inserted in the Skip I commutator bar I0. Accordingly, by this method the stepping rack. 69 can be continuously advanced any number of columns. When the respective commutator brush 98 leaves the last peg, the skip relay 302 will release, owing to the opening of its contact 304. causing the stepping rack 66 to stop thereat, and operation of the card sensing device Will proceed in the manner previously described.

By the insertion of copper pegs in the Ship commutator bar IOI the Skip relay 306 (Fig. 4) will operate through commutator contact 301. The operation of the skip relay 306 will complete, through its contact 308, a circuit to operate the G transmitting relay 309 (Fig. 4) which will transmit upper case G in the manner described. When the stepping relay 248 operates in this cycle it will lock up through the contact 3 I I of the Skip relay 306, and consequently relay 248 will remain operated as long as the Ship relay 308 is operated, which again will depend on the copper pegs inserted in th Ship commutator bar I0 I.

In Figs. 1.2, 13 and 14 is disclosed an alternate form of sensing unit wherein the sensing or card reading elements comprise contact devices of the ball type, and a continuous chain type stepping device. Referring to Fig..l2, the card sensing device comprises an upper plate M2 and a lower plate M3 suitably spaced to permit the passage there'oetween of a statistical card II. Similar to the arrangement disclosed in Fig. '7, card supply and card feeding facilities are provided, although not shown. Also, card ejecting and card receiving facilities are contemplated. In Fig. 13 is shown a detail view of the card sensing contact elements which comprise a rigid contact portion 414 and a flexible or resilient contact portion 4I5 insulatably mounted on the top plate M2. The free end of the upper or flexible portion 4I5 of the contact device is provided with a portion 4I6 th bottom plate M3 the insulating portion 4I6 will be raised and the contact 4I8 will be opened. Furthermore, when the card H is stepped along columnwise and'a code'hole H9 in the card is presented'beneath the ball 4I-1, thecontact 4IS' will close.

Referring again to Fig; 12, a group of contacts 4I8-comprise an upper field sensing or reading. means 42I and a similar'group of contacts4I8" comprise a lower field sensing means 422.- Also, appropriately positioned on the card sensing device is an upper field contact device 423 and a lower field contact device 424'analogous to contact devices 59 and-SI, respectively. The bottom plate-M3 is providedwith 'a longitudinal slot 425 into which and along which operates card-moving elements 426 carriedby a sprocket chain 421 comprising the card feeding" device. The chain 421 isdriven by a sprocket wheel 428: Power is imparted to the chain 421 by a drive means similar to that shown in Fig. '1 comprising the stepping-magnet 85. However, since thefeedingaction of chain 421 is continuous, no carriage return mechanism is necessary, and hence the clutch 12-13 and carriage return magnet 261 can be dispensed with.

Comparing the circuit in Fig. 14 with the circuit in Fig. 9, the upper field sensing magnet 31, the lower field sensing magnet 43 and carriage return relay 261 have been eliminated. The contact arrangements 93-94-95 and 96259 have been dispensed with. The contact arrangements for upper field relay I45 and lower field relay I46 have been changed. Upon closure'of switch I42 a circuit for energizing the start relay I53 is completed from ground, through closed contact I44, through the winding of start relay I53, through contact 429 (now closed) of relay I45, over conductor 43I, through contact 432 (now closed) of relay I46, through closed contact I43 of start switch I42 to battery I51. Relay I53 upon energizing will close its contacts I59 and 433 and open its contact 434. The efiect of closing contact I59 is the same as heretofore described Contact 434 when closed prepares a circuit for the stepping magnet'85, which circuit will be completed as hereinbefore described from the stepping relay 248 (Fig. 4) over conductor 252, through contact 434, over conductor 435, through the winding of stepping magnet 85, over conductor I65 to battery I66, when a stepping operation is to be performed.

Contact 433, upon closing, completes a circuit for operating the card feeding magnet I62 from ground, through contact 433, over conductor 436. through the winding of card feed magnet I62, over conductor I65 to battery I66; Th card I! upon being fed into the card sensing device (Fig. 14) will open the contact 64 (through the ball type contact device 423) and thus open the obvious circuit for the upper field relay I45. Relay I45 upon releasing will open its contact 429 and close its contacts 431. Thus, circuits will be completed from the upper field sensing contacts 42 I, through contacts 431, over conductors 438 and 439 to the card code relays III to H6. A circuit is thus completed through the fan circuit (Fig. 1) to the Baudot code relays I 3| to effect trans 16 mission of a Baudot code signal as hereinbefore described, a steppin function being initiated during each transmission.

After a card II has been stepped 45 columns (in the present embodiment) and sensing or reading of the upper field is completed, the card II passes beyond the ball contact devices "I, and upon stepping to the 46th column the ball contact devices 422 are engaged. Substantially simultaneously the ball contact device 424 is engaged to open the lower field contact 65 to break the circuit for lower field relay I46. Relay I46, when released, will open its contact 432 and close its contacts I. The timing of operation of contacts 429 and 432 should be such that the contacts 432 are opened before contacts 429 are closed, to maintain the start relay I53 unenergized during the sensing or reading operation; With the closing of contacts I, circuits will be completed from the lower field sensing contacts 422, through contacts I, over conductors 439 the start relay I53 is thus energized, its contact 433"will close to complete a circuit for the card eject relay 256 from ground, through contact 433 (now closed), over conductor 436, through the winding of card eject magnet 256 to battery I66: Simultaneously, however, the card'feed magnet I62 will be operated, so that a new card will be fed'into the card sensing device at the same time that one is ejected. An overlap is thus provided" resulting in a substantial saving of time. A further saving of time is achieved by the elimination of the carriage return function.

While the present invention has been illustrated and described with reference to specific structures, it will be understood that various other modifications may be made without departing from the spirit of the present invention. Hence, all forms coming within the scope of equivalency of the appended claims are intended to be covered by the invention.

What is claimed is:

1. An arrangement for converting information punched in upper case or lower case in two fields in a tabulating card in one code to another code for transmission telegraphically, means for advancing said card column by column, means for sensing one field, means for sensing the other field, electrical circuit means including card controlled contact means for effecting said sensing operations sequentially, a fan circuit in said electrical circuit means, means under thecontrol of the codes punched in said card for'establishing a circuit through said fan circuit, relay means governed b said fan circuit for establishing 'a condition, whereby the card code is converted to said other code, means for transmitting a signal according to said other code, means for automatically inserting an appropriate shift code signal upon each change of case, and means for suppressing the operation of said card advancing means during the period of operation of said signal inserting means.

2. In combination a device for reading the comprising i coded record on a statistical card, said card having an upper field and a lower field, a first sensing device for reading the upper field, a second sensing device for reading the lower field, cyclically operable means for steppin said card from an initial position to a final position, electrical circuit means including card controlled contact means for effecting the operations of said sensing devices sequentially, said electrical circuit means comprising a fan circuit and connected relay means for converting, through said fan circuit, the code read in the card into a different code ignal governed by the relays, each of said codes having different case groups, means in said electrical circuit means for automatically inserting an appropriate shift code signal upon each change of'case, and means to suppress the operation of said cylically operable means during the period of operation of said signal inserting means.

3. In a device for reading the coded record on a statistical card, said card having an upper field and a lower field, a first sensing device for readin the upper field, a second sensing device for reading the lower field, cyclically operable means for stepping said card from an initial position to a final position, means cooperable with said cyclically operable means for effecting the operation of said sensing devices sequentially, and

automatic means effective when said cyclically operable means has reached its final position for returning said cyclically operable means to its initial position.

l. In a device for reading the coded record on a statistical card, said card having an upper field and a lower field, a first sensing device comprising self-closing ball-controlled contact means for reading the upper field, a second sensing device comprising self-closing ball-controlled contact means for reading the lower field, cyclically operable means for stepping said card through said first and second contact means sequentially from an initial position to a final position, and automatic means effective when said cyclically operable means has reached its final position for returning said cyclically operable means to its initial position.

5. In a device for reading the coded record in a statistical card, said card having an upper field and a lower field, a first sensing device for reading the upper field, a second sensing device for reading the lower field, electrical circuit means including card controlled contact means for effecting the operations of said sensing devices sequentially, said electrical circuit means comprising a fan circuit and connected relay means for converting, through said fan circuit, the code read in the card into a diiferent code signal governed by said relays, means comprising a commutator and relay means independent of said fan circuit for automatically inserting predetermined function code signals, and means for suppressing the operation of said sensing devices during the insertion of said function code signals.

6. In combination with a device for reading the record in one code on a statistical card, said card having an upper field and a lower field, a first sensing device for reading the upper field, a

second sensing device for reading the lower field, electrical circuit means for translating the record read from said one code to a different code, means for transmitting said record in said different code, cyclically operable means controlled by said transmitting means for stepping said card column by column, card controlled contact means operably associated with said electrical circuit means and cooperable with said cyclically operable means for effecting the'operations of said sensing devices sequentially, commutator means operably associated with said cyclically operable means for automatically inserting predetermined iunction signals, and means for suppressing the operation of said sensing devices during the insertion of said function code signals.

'7. In combination in a device for reading the record in one code on a statistical card, said card having an upper field and a lower field, a first sensing device for reading the upper field, a second sensing device for reading the lower field, electrical circuit means for translating the rec- 0rd read from said one code to a different code, means for transmitting said record in said different code, cyclically operable means controlled by said transmitting means for steppin said card column by column, card controlled contact means operably associated with said electrical circuit means and cooperable with said cyclically operable means for effecting the operations of said sensing devices sequentially, commutator means associated with said cyclically operable means, elements removably insertable in said commutator, and relay means in said electrical circuit means for controlling the operation of said cyclicall operable means according to the positionment of said elements in said commutator.

8. In a device for reading the coded record on a statistical card, said card having an upper field and a lower field, a first sensing device for reading the upper field, a second sensing device for reading the lower field, cyclically operable means for stepping said card from an initial position to a final position, means cooperable with said cyclically operable means for effecting the operation of said sensing devices sequentially, commutator means comprising a contact arm operably associated with said cyclically operated means adapted to cooperate with a set of predeterminedly pegged contact devices, whereby predetermined function code signals are automatically inserted, and automatic means effective when said cyclically operable means has reached its final position for returning said cyclically operable means to its initial position.

RALPH H. HALVORSEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,419,256 Hammond June 13, 1922 1,462,875 Stoddard July 24, 1933 2,343,405 Doty Mar. 7, 1944 

